Records for Ontario Area, Oregon (ONOthr) on 05-02
  Record Highs
  
    - 
      1:  94°F (1947)
    
- 
      2:  91°F (1966)
    
- 
      3:  87°F (1971)
    
 
  Record Lows
  
    - 
      1:  26°F (1954)
    
- 
      2:  26°F (1948)
    
- 
      3:  29°F (2008)
    
 
  Lowest Highs
  
    - 
      1:  55°F (2000)
    
- 
      2:  53°F (1957)
    
- 
      3:  52°F (1979)
    
 
  Highest Lows
  
    - 
      1:  49°F (1964)
    
- 
      2:  55°F (1950)
    
- 
      3:  57°F (1999)
    
 
  Highest May temperature:
  
  103°F on 05-29-1986.
  Lowest May temperature:
  
  25°F on 05-01-1946.
  Average temperature is 55.5°F
  Average high is 68.8°F
  Average low is 42.2°F
 
  Temperature data from 1945 to 2022.
  Record Precipitation
  
    - 
      1:  0.52" (2009)
    
- 
      2:  0.41" (1960)
    
- 
      3:  0.35" (2007)
    
 
  Precipitation data from 1945 to 2022.